Decreased lesion formation in CCR2−/− mice reveals a role for chemokines in the initiation of atherosclerosis

Chemokines are proinflammatory cytokines that function in leukocyte chemoattraction and activation and have recently been shown to block the HIV-1 infection of target cells through interactions with chemokine receptors 1 , 2 . In addition to their function in viral disease, chemokines have been impl...

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Veröffentlicht in:Nature (London) 1998-08, Vol.394 (6696), p.894-897
Hauptverfasser: Boring, Landin, Gosling, Jennifa, Cleary, Michael, Charo, Israel F.
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Gosling, Jennifa
Cleary, Michael
Charo, Israel F.
description Chemokines are proinflammatory cytokines that function in leukocyte chemoattraction and activation and have recently been shown to block the HIV-1 infection of target cells through interactions with chemokine receptors 1 , 2 . In addition to their function in viral disease, chemokines have been implicated in the pathogenesis of atherosclerosis. Expression of the CC chemokine monocyte chemoattractant protein-1 (MCP-1) is upregulated in human atherosclerotic plaques 3 , 4 , in arteries of primates on a hypercholesterolaemic diet 5 and in vascular endothelial and smooth muscle cells exposed to minimally modified lipids 5 , 6 . To determine whether MCP-1 is causally related to the development of atherosclerosis, we generated mice that lack CCR2, the receptor for MCP-1 ( ref. 7 ), and crossed them with apolipoprotein (apo) E-null mice 8 , 9 , 10 which develop severe atherosclerosis. Here we show that the selective absence of CCR2 decreases lesion formation markedly in apoE −/− mice but has no effect on plasma lipid or lipoprotein concentrations. These data reveal a role for MCP-1 in the development of early atherosclerotic lesions and suggest that upregulation of this chemokine by minimally oxidized lipids is an important link between hyperlipidaemia and fatty streak formation.
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identifier ISSN: 0028-0836
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source MEDLINE; Springer Online Journals Complete; Nature Journals Online
subjects AIDS/HIV
Animals
Aorta - pathology
Apolipoproteins E - physiology
Arteriosclerosis - blood
Arteriosclerosis - etiology
Arteriosclerosis - pathology
Atherosclerosis (general aspects, experimental research)
Biological and medical sciences
Blood and lymphatic vessels
Cardiology. Vascular system
Cardiovascular disease
Chemokine CCL2 - physiology
Cholesterol - blood
Diet, Atherogenic
Humanities and Social Sciences
Lesions
letter
Lipids
Lipoproteins - blood
Medical research
Medical sciences
Mice
Mice, Inbred C57BL
multidisciplinary
Myocardium - pathology
Proteins
Receptors, CCR2
Receptors, Chemokine - physiology
Receptors, Cytokine - genetics
Receptors, Cytokine - physiology
Science
Science (multidisciplinary)
Triglycerides - blood
Viral diseases
title Decreased lesion formation in CCR2−/− mice reveals a role for chemokines in the initiation of atherosclerosis
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